BBob
WKR
FWIW Glen Eberle of Eberlestock started out making lightweight composite biathlon stocks. At one time he made a very light laminated wood carbon hunting stock. If I recall it had two vertically oriented carbon layers. He was more aggressive with the rear cutout than what your example shows. They were quite beautiful and I tried like heck to get him to make more but he wouldn't. Too focused on packs at the time and let the stocks go. It's been years since I've seen a picture of the full stock but the buttstock still shows up in some of his pack pictures. Good luck on your endeavor 
